have possession of

1. We've bought the house, but we can't have possession of it before July.
我们买下了这所房子,但要到七月份才算实际拥有。

来自《简明英汉词典》

2. This one must have been in the possession of a private collector and somehow managed to escape.
这一只一定是私人收藏家的,不知怎么它竟跑了出来。

来自《用法词典》